Paper-board barrel



June 3, 1924. 7 1,496,106

M. WATSON ET AL PAPER BOARD BARREL 0 iiinal Filed Aug. 22, 1922 I HVVEIVTORS 9 W W Patented June 3, 1924;.

FICE.

MERRILL WATSON, OF EAST ORANGE, NEW JERSEY, AND HERBERT 3'. SMITH, OF

NEW HAVEN, CONNECTICUT; JOHN H. WATSON, ADMINISTRATOR OF SAID MER- BILL: WATSON, DECEASED, ASSIGNORS TO AMERICAN FIBRE COOPERAGE COMPANY INC., 0']? DOVER, DEL-AWARE, A CORPORATION OF DELAWARE.

PAPER-BOARD BARREL.

Application filed August 22, 1922, Serial No. 583,552. Renewed October 30, 1923.

T 0 all "1072 0712.v it omg concern:

Be it known that we, M and HERBERT J. SMITH, citizens of the llnited States, and residents, respectively, of Fast Orange, in the county of Essex and State of New Jersey, and New Haven, in the county of New Haven and State of Con necticut, have invented certain new and useful Improvements in Paper-Board Barrels; and we do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

The invention relates to barrel staves formed of paperboard, and consists of certain improvements upon the stave forming the subject-matter of application Serial No. 528,306, which stave is preferably made up of a series of plies of paperboard united by a suitable binder or adhesive, I the latter serving to temporarily moisten the blank sufficiently to enable the same to be pressed into its ultimate form, which includes lon-' gitudinal and transverse curvatures and the narrowing of the stave from the middle towards the ends. Such formation of the stave is effected by pressing the softened paperboard blank to impart the desired curvature thereto, and at the same time forming in the body of the blank an intermediate longitudinal groove which increases in depth and width from the center. towards the ends, and transverse grooves near the ends inter: secting the longitudinal groove, these several grooves being made in the outer wall of the stave and therefore forming corresponding projections or ribs on the opposite or inner wall.

When the staves thus formed are made up into a barrel, the inwardly projecting ribs formed by the deepened end portions of the longitudinal groove overhang the barrel heads and lock them inplace on the supporting ribs at the inner side of the stave formed by the outer transverse grooves. It has been found in practice, however, that these locking ribs or projections must overhang the head at a fairly sharp angle in order to serve as an effective locking means, and in order to provide this it becomes necessary in some cases, for example, in the ERRILL VVA'rsoN smaller sizes of staves, to groove or depress the blank to an extent that tends to break or separate the fibre of the paperboard. This obviously is objectionable and it has therefore been one of the objects of our present invention to improve the stave by avoiding Fig. 4 is a plan view of the stave fronr the outside;

Fig. 5 is a fragmentary sectional perspective view showing the mode of applying the head and fastening hoops to the barrel,

Fig. 6 is a view of one of the barrel heads, and

Fig. 7 is a perspective view of the complete barrel.

Referring to the drawings, 1 indicates the paperboard blank for forming a single stave, the same preferably comprising a series of plies of rectangular sheets of paper,

board, united by a suitable adhesive, such, for example, as silicate of soda, which will have the effect of first softening the blank to render the same more or less plastic and pliable, and subsequently toset or harden and retain the blank in the ultimate form imparted thereto by the succeeding operations.

While the blank is still plastic or soft, due to the action of the adhesive. it is placed in a suitable press, whichreduces the blank to its final stave-like form, name- 1y, with the proper bilge produced by im parting a longitudinal curvature from end to end and a transverse curvature from side to side. During the pressing operation there is formed in the blank a median longitudinal groove 2, which increases in depth and width from the center of the blank toward each end, said groove comprising a relatively narrow shallow middle portion and outwardly flaring deepening end sections 3 which have the effect of producing the necessary taper ot the stave from the 5 middle portion towards the ends. In addition to these grooves 52, there are also formed during the pressing operation a pair of parallel trans-verse grooves at, l, in the respective ends of the stave, all of which grooves constitute material reenforcing or strengthening elements for each stave so that the staves may be handled and shipped without danger of breaking or deforming the same.

In the stave ot the aforesaid application, one transverse groove only was provided at each end ot'the stave, this groove serving to receive the usual retaining hoop, and

providing, at the inner side of the stave, an-

39 inwardly projecting ledge tor the support of the barrel head. the head being held or locked on this ledge by the overhanging end of the longitudinal rib. As hereinbetore referred to. this locking rib, to be properly effective, should overhang the head at a fairly sharp angle, and to obtain this angle there must be formed the objectionable deep depression or groove in the paperboard as referred to, which is liable to result in breakage of the fibre oi the same. In the present case, we make the ends of the longitudinal grooves less deep to thereby avoid the possibility of such breakage. This of course lessens the effectiveness of 355 the rib formed by the groove as a locking means for the head. To make up for this we term the two transverse grooves 4, 4c, in the respective ends of the stave to receive the "fastening hoops 5, 5, and space these grooves so as to term at the inner side of the stave and at opposite sides of the longitudinal. rib 6, aligned channels 7, '7, to receive the head 8. the latter being firmly held in said channel seats and against movement endwise of the sta'ves by the fastening hoops 5, 5', positioned directly above and below the same. I

The end of the rib 6 in the present case, notwithstanding its reduced angle of over- 59 hang above the head as compared with that of the rib of the aforesaid application, serves to supplement the channel seats 7, 7, as a means for holding the head in place.

The head 8, as shown in Figs. 6 and 7. is formed with spaced indentations 9 in its peripheral edge to receive the ribs 6 at the inner side of the staves.

In the particular formation and structural arrangement of the stave as illus trated, eight units are su'liicient to term a barrel, and when assembled in the usual manner and the heads and fastening hoops applied, a very strong and light barrel, as illustrated in Fig. 7 results.

What we claim is 1. A barrel stave comprising a blank of paperboard having a longitudinal groove in its outer wall forming a corresponding rib on its inner wall, and a pair of transverse grooves in its outer wall near each end forming aligned channels in its inner wall at opposite sides of the rib thereon.

2. A barrel stave comprising a blank of paperboard having a longitudinal groove in its outer wall increasing in depth and width from the center towards each end of the blank and forming a corresponding rib at the inner side of the latter, and a pair of transverse grooves in its outer wall near each end forming aligned channels in its inner wall at opposite sides of the rib thereon.

3. A barrel comprising a plurality of adjoining staves, each formed of a blank of paperboard having a longitudinal groove in its outer wall forming a corresponding rib on its inner wall, and also having a pair of transverse grooves in its outer wall near each and forming aligned channels in its inner wall at opposite sides of the rib thereon, heads seated in the channels of the adjoining staves and having indentations to receive the ribs of the staves, and retaining hoopes seated in the transverse grooves in the outer walls of the staves.

4:. A barrel comprising a plurality of? adjoining staves, each formed of a blank of paperboard having a longitudinal groove in its outer wall increasing in depth and width from the center towards each end of the blank and forming a corresponding rib at the inner side of the latter, and also having a pair of transverse grooves in its outer wall near each, end forming aligned. channels in its inner wall at opposite sides of the rib thereon, heads seated in the channels of the adjoining stares and having indentations to receive the ribs of the staves, and retaining hoops seated in the transverse grooves in the outer walls of the staves.

In testimony whereof we aflix our signatures.

MERRILL IVATS't N. HER-BERT J. SMITH. 

